Machine for drilling and studding brushes



Oct. 30, 1951 w H ER 2,573,519

MACHINE FOR DRILLING AND STUDDING' BRUSHES Filed NOV. 1, 1948 3 Sheets-Sheet l M Q o o 723 1a 73 7/ lwewrog A. WALTHER v MACHINE FOR DRILLING AND STUDD ING BRUSHES 3 Sheets-Sheet 2 Oct. 30, 1951 Filed NOV. 1, 1948 Oct. 30, 1951 A. WALTHER 2,573,519

MACHINE FOR DRILLING AND STUDDING BRUSHES Filed Nov. 1, 1948 :5 Sheets-Sheet :5

I III/I1 EM 5 AM a l atented Oct. 30, 11951 UNITED STATES JIPATENT OFFICE- DRILLING AND STUDDING BRUSHES- Adolf Walther, ()berentfeld'en, S-witzerland" Amilicati an.v Nov m er 1, 1 4 S eL Q- 5.7.6.96

I n. Switzerla d; vember. 1, 1947.

My present invention relates to improvements. in machines for. drilling and studding brushes, in which the brush carrier and a jig are dis.- posed universally movable and so. interconnected as to, always be parallel to each other, the. drilling and studding. tools being operated in successive operations at the points'of the brush defined by a hole-finder feeling-element and. the

paratively great.

In accord withmy present invention, the jig, is operatively connected to pattern chain means which so co-act with two rows of control elements of the said means that one of said rows.

defines the horizontal, and the other the vertical motion of the jig.

One form of my present invention is shown in the accompanying drawing, in which Fig. 1 shows a side view of a. brush-making machine,

Fig. 2 a top plan view of Fig.1 in larger scale,

Fig. 3 a front view ofia part of Fig. 1,

Fig. 4 a plan view on the line IV.IV of Fig. 3.,

Fig. 5 a partialview of Fig. 3, partly in section,

Fig. 6 a partial view on the line VIVI of Fig.

Fig. 7 a section on the line. VIIVII of Fig. 5,

Fig. 8 a section onthe line VIIIVIII of Fig. 6,

Fig. 9 a partial view of a Geneva motion,

Fig. 10 a section, corresponding to. Fig. 8, of a modified form of invention,

Fig. 11 a cross-section of Fig. 10,

Fig. 12 a partial section of a modified form of pattern chain means, and

Fig. 13' a partial'top" plan view of the chain means of Fig. 12.

The machine, as shown in Fig. 1, comprisesa front main standard I and a rear standard 2.. A hole-finder feeler pin 3, a drill 4 for drilling holes in a-brush back, and-a studding'or punching tool 5 for inserting the bristles in the said holes are displaceablyarranged on' the main standard I.

A slide 6 (Fig. 1') is mounted horizontallydisplaceable on therear standard' 2; Two plates-'8" 3 Claims; (Cl. 3003)- 2. are attached to. a lower angle iron T secured to theslide (if, and two similar plates 9' (Fig. 4),." mounted vertically above the plates 8' are rigidly? connected. to the latter. A body H]; pivoted oni a. pin [1, is disposed between each plate Bfand'j' its appurtenantplatezflj The two plates 83 9" are provided with a row ofj'holes [2' in which the II may beinserted as desired so'asv to. locate" the body Iii" further in front or in rear.

Hear rier plate l'3- is horizontally pivoted to each body it: in that two rearwardl'y extending arms Mi oithe'plate l3 comprise a row of holes lfi'each. and a screw bolt I'B passes, through one of'saidlj hoies and'is securedin' the body it." A propping. stirrup I8. is articulated, on. screw bolts, .Ij8jto eac'h'p lat'e f3, and its lower center portion. is

bent oifforwardiy at right angles and carries a pin t9, Thetwo pins IS' f'the' two stirrups v I8 are mounted in bosses 21] of a transom. 2.1.1,

to'the center of which a connecting stirrup 22 is attached; At the, head of the latter, a, boss 23' is provided, inwhich a, pin. 24is mounted;

A thirdstirrup It is pivoted on, the p in.2;ijain 1" articulate'd'to 'ajthird carrier plate I'3' which in.

turn is articulatedj to a third body [0. disposed" between two plates 25', 26' (Fig; l). The lower of these 'lat'ter plates, 25; is Secured to. an angle. iron" Z'T'Which' in turnv is attachedto the slide, 6. Theupper plate 26 carries a pin 28' which" is engagedby one endiota resilient tension. ele-.

ment 29 running over a guide roller 301',

weight 31', guided vertically movable, is con:

nected to the. other end ofthe, element 2.9, and. is provided with a, skew face 32. 35

comprises a lug 39; to which a rod. 403' is secured] The latter is mounted in a lever-arm, 4 l' which in turn is pivoted to the upper enol'"o a link 42.".

The lower end'of the latter is articulated to. one.

armfit 'of a two arm lever 43.144, the other end'. ofwhich'carri'es a counterweight 45. (Fig. 11)

As' seerr from'Fig. 3', three carrier platesv l3- aresointerconnected' and arranged-in themanner described-asto be universally movable, ,.all.

three plates being always parallel to each other.

the hole-finder feelerpins cooperates. A brush stock 41', 4'8" each is secured to the two lower.

plates" It, the drilljfco acting with the right! ch 5; withv the. left-.

hand stock 41', and the hand stock' 48.

A roller 33, engageable withv the latter, is pivoted to one.

The portion of the machine thus far described is known in the art, the jig 46 usually being manually guided so that the feeler pin 3 may successively engage the holes of the jig. The brush stocks 41, 48 are accordingly moved through the operative connection described, and holes may be drilled therein by means of the drill 4 and.

joint, comprising a socket 50 and a ball 5|, is 1 disposed in the center of the stirrup 49, the said ball being disposed at the lower end of an actuating rod 52. The latter is so connected to a lever arm 55, by means of pins 54 engaged in'slots 53 thereof, that the rod may be displaced in the longitudinal direction of the arm 55; but follows'the rotation of the latter; The said arm 55 is pivoted on an axle pin 56 (Fig. 6) and 'is slotted at 51 to engage a pin 59 mounted on a horizontally displaceable rail 58. A screw bolt 68 is secured to the actuating rod 52 and engaged in a slot 6| of a bell-crank lever 62, 63 pivoted on a pin 64. The two pins 56, 64 are secured to a transom 65 by means of a nut 66. The arm 62 of the lever 62, 63 is bent, as shown in Fig. 2, and a slot 61 is provided on the arm 63. A pin 69 secured to a horizontally displaceable rail 68, is engaged in the slot 61.

The two rails 58, 68 are guided in lateral plates 10 of a frame 1| mounted on the standard 2. A guide element 12 is secured to the rail 58, comprising guide faces 13. Another guide element 14 having guide faces 15 is secured to the rail 68. Two rows of rollers 16, 11 co-act with the said faces 13, 14 and are pivoted on pins 18 to lamellae'or slats 19. The latter at both ends are interconnected, as shown in Figs. 2'and 5, by chain links 88' which are engaged, on the front side of the machine, by two sprocket wheels 82, 83 keyed to a shaft BI and comprising two rows of teeth each. The shaft 8| is mounted in ball bearings 84 in the frame 1|, and a wheel 85 of a Geneva motion is rigidly secured to the sprocket wheel 83. A disc 86 (Figs. 5, 9) coacting with the wheel 65 is provided with a semicircular pin 81 and an eccentric pin 88, and is mounted on a driving shaft 89. driven from a driving disc 9| through a sprocket 90. The pattern chain, comprising the lamellae 19 and the links 88, is guided on the machine rear side by idling sprocket wheels 92.

At each revolution of the driving disc 9| and, therefore, of the disc 86, the wheel 85 of the Geneva motion is rotated through one tooth space, and the pattern chain thus moved through one lamellae division. During such movement, the two rails 58 and 68 are slightly displaced laterally through the action of the rollers 16, 11 on the guide faces 13, 15. Such displacement is transmitted through the lever arm 55 and the bell-crank 63 on to the actuating rod 52. The latter, through the ball-and-socket joint 58, 5| and the stirrup 49, moves the jig carrier-plate I; so that the hole-finder feeler pin 3 at each succeeding operation is engaged in an adjacent hole of the jig 46. Holes then are drilled in the brush stock 41 by means of the drill 4 in accord with the jig and ma manner known per The latter isse; and bristles are inserted in the brush stock 48 by means of the punch 5. The jig 46 is moved horizontally by the rollers 16, and vertically by the rollers 11. By combining the action of the two sets of rollers 16, 11 a diagonal movement of the jig may be produced also.

In Figs. 10, 11 a modified form of the guide element 14 of Fig. 8 is shown. Two members 95, having guide faces 15, are pivoted to a securing element 93 which is mounted on the rail 68 by means of screws 94, and leaf springs 96 act upon the said members 95. The latter are capable of yielding resiliently when the rollers 11 are engaged on the guide faces 15, and then are restored into their initial position through spring action. The guide element 12 may be adapted in a similar manner. In this way, the occurrence of shocks in the transmitting mechanism may be prevented.

In Figs. 12 and 13, another form of pattern chain is shown, in which the pivot pins 18 for the rollers 11 are fixed to slats or elements 91 which are provided with hinges and interconnected by means of pins 98. By replacing any of the chain elements 91, the pattern may be changed without the need of demounting the chain and mounting another pattern chain. Such pattern chain runs on correspondingly formed sprocket wheels 99 as shown in Fig. 12.

Existing semi-automatic machines may be converted into fully automatic machines by mounting thereonto the means described for moving the jig.

What I claim as new and desire to secure by Letters Patent, is:

1. In a, mechanism for brush-making machines for automatically controlling the horizontal and vertical movements of a carrier for the jig and the associated brush backs relatively to a hole-finder feeler and to a drilling and studding tool each associated with said feeler, the improvement. defined by the provision of a pattern chain comprising a plurality of slats interconnected at their ends by means of links, two rollers pivoted on studs secured in upright position to each slat, two superposed independent plates disposed in close proximity to said chain and mounted longitudinally displaceably in the machine frame, the said plates each having a cam means fixed thereto for engaging one or the other respectively of the said rollers, and means secured at one end to each of said plates respectively and at the other end to said carrier for continuously moving the latter in a horizontal and vertical direction respectively in correspondence with said pattern so as to bring the holefinder feeler successively into engagement with the holes in the jig and thus also the drilling and studding tools with their respective brush backs.

2. In a mechanism for brush-making machines for automatically controlling the horizontal and vertical movements of a carrier for the jig and the associated brush backs relatively to a holefinder feeler and to a drilling tool and to a studding tool, the said two tools being associated with said feeler, the improvement defined by the provision of a pattern chain comprising a plurality of slats exchangeably interlinked by means of hinged portions and pins interengaging the latter, a first pair of power-driven sprocket wheels rotatably mounted in the machine frame for engaging the said hinged ortions, a second pair of sprocket wheels idly engaging the said portions, Geneva gear means for imparting a stepby-step motion to said first pair of sprocket wheels and said chain, two rollers pivoted to each slat in upright position, a first and a second plate mounted for independent longitudinal movement in the machine frame and having a cam means each secured thereto, the cam means on the first flat being adapted to engage one, and the cam means on the second plate being adapted to engage the other of said rollers on each plate, first lever means for transmitting the movement of the first plate onto said carrier in a horizontal sense, and second lever means for transmitting the movement of the second plate onto said carrier in a vertical sense; the whole in such combination that the carrier is intermittently movable in a plane substantially normal to the plane of the pattern chain for the purpose described.

3. In a mechanism for brush-making machines for automatically controlling the horizontal and vertical movements of a carrier for the jig and the associated brush backs relatively to a holefinder feeler and to a drilling tool and to a studding tool, the said two tools being associated with said feeler, the improvement defined by the provision of a pattern chain made of a plurality of interlinked slats revolvably mounted on the machine frame, two spaced rollers pivoted in upright position to each of said slats, the said rollers forming two spaced rows around the entire pattern chain, power-driven means for imparting a step-by-step movement to said chain, two superposed independent plates mounted longitudinally displaceably in the machine frame, each said plate having a cam means secured thereto and adapted to be engaged by the consecutive rollers of said two rows respectively, one of said plates being operatively connected to an arm pivoted to the machine frame to impart an oscillating movement to said arm, a vertical rod connected at its foot end to said carrier by means of a ball-and-socket joint, the said rod being secured to said arm in longitudinally movable relation, a bell crank pivoted to the machine frame and at one end operatively connected to the head end of said rod, the other of said plates being operatively'connected to the other end of said bell crank for the purpose of oscillating the latter so as to raise and lower the said rod and carrier while they are oscillated through the reciprocating movement of the first flat so as to move the carrier in all directions in a plane substantially at right angles to the plane of the pattern chain in accordance with the pattern defined by said two rows of rollers.

ADOLF WALTHER.

REFERENCES CITED The following references are of record in the file of this :patent:

UNITED STATES PATENTS 

